问题 更新时间2023/4/3 12:59:00 (单选题)Not until Mr. Smith came to China _____ what kind of country she is from.(本题1.0分)A.he knewB.he didn.t knowC.did he knowD.he couldn.t know 答案 登录 注册 答案:C. 出自:青书学堂 >> 桂林理工大学大学英语4